Cummins 5291050 — Genuine Engine Oil Pump for 5.9L & 6.7L ISB

MPN: 5291050  |  Also Known As: lubricating oil pump, lube oil pump  |  Common Cross-Refs (ID): Mopar 68489379AA, Cummins 4897481, 4988801

Restore factory oil pressure and flow. The genuine Cummins 5291050 engine oil pump is cataloged for Ram 2500/3500 5.9L & 6.7L applications and widely sold for 2003–2018 coverage. Cummins also notes primary use on later ISB/QSB 6.7 (EPA13) platforms—so for non-automotive or mixed-year builds, verify by VIN/ESN before purchase.

Features & Benefits

• OE pressure & flow to protect bearings, cam, and turbo under load.
• Direct-fit housing and gear set for ISB engines—no modifications required.
• Gear-type design for consistent lubrication and long service life.
• Ideal during overhauls or when correcting low hot-idle oil pressure.
• Genuine Cummins materials and tolerances.

Verified Fitment (Automotive)

Industrial/Off-Highway: Cummins catalogs this pump as a Lubricating Oil Pump used primarily on EPA13 (Tier 4) 6.7L ISB/QSB engines; verify by ESN for equipment engines or non-Ram use.

Specifications

• Type: Engine lubricating (gear-type) oil pump
• OE Part Number: 5291050
• Common Cross-Refs (ID): Mopar 68489379AA; Cummins 4897481, 4988801
• Quantity Required: 1 per engine

Often Paired With

• Pickup tube O-ring & screen (inspect/replace if brittle or damaged)
• Front cover/timing cover gasket set (if removed during service)
• Fresh oil & filter after installation and first heat cycle

What’s In The Box

• (1) Genuine Cummins Engine Oil Pump (5291050)

Installation Tips

• Pre-lube the pump with clean engine oil and verify pickup alignment.
• Inspect the pickup tube O-ring; torque fasteners to spec and check end-play where applicable.
• Prime the system, verify oil pressure on first start, and recheck for leaks after warm-up.

FAQ

WILL THIS FIT MY 2003–2018 RAM 5.9L/6.7L?

Retailers commonly list 5291050 for 2003–2018 5.9L & 6.7L Ram applications. Because Cummins highlights EPA13 6.7L usage, verify by VIN/ESN if your truck has mixed-year components.

WHAT ARE THE COMMON CROSS-REFERENCE NUMBERS?

Mopar 68489379AA and Cummins 4897481 / 4988801 are frequently associated IDs for this pump family.

DOES THIS FIT 1989–2002 TRUCKS?

No—those engines use earlier pump numbers (e.g., 4939587 for 12V/early 24V). Choose by VIN/ESN.

HOW DO I KNOW MY OIL PUMP NEEDS REPLACEMENT?

Low hot-idle oil pressure (with correct viscosity), metallic debris, or excessive wear during teardown are common indicators.

IS THIS A GENUINE CUMMINS PART?

Yes—OE Cummins 5291050.